Prank rhind



(No Model.)

1?. RHIND.

LAMP.

. Patented Apr. 19, .1887.

N. PETERS, PhnlaLilhugrapher. Walhingtnn. D, C.

UNITED STATES PATENT OFFICE.

FRANK RHIND, OF MERIDEN, CONNEQ'IIGUT.

LAMP.

SPECIFICATION forming part ofLetters Patent No. 361,545, dated April 19, 1887.

Application filed September 27, 1886. Serial No. 214,621. (No model.)

.To all whom, iz may concern:

Be it known that I, FRANK RHIND, 0f Meriden, in the county of New Haven and State of Connecticut, have invented a new Improve ment in Lamps 5 and I do hereby declare the following, when taken in connection with accompanying drawings, and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and rep-resent, in-

Figure l, a vertical central section of the lamp, showing a sectional side view of the wick-adjusting device; Fig. 2, a transverse section through the shaft, showing a top View of the yoke and wick-holder. This invention relates to an improvement in the class of lamps in which a tubular wick is employed, and in which air is admitted upward inside the burner to aid in supporting combustion.

The object of my invention is a simple and convenient device for adjusting or raising and lowering the wick; and it consists in a vertically-gnided slide to which the .wick is attached, combined with a vertical screw fixed as to longitudinal movement, but free to rotate, the axis of the screw being parallel with the axis of the wick, with a yoke adapted to work between the threads of the screw, the said yoke being connected to the slide, and so that by the rotation of the said vertical screw the yoke and the slide, with the wick attached thereto, will be raised or lowered, according tothe direction in which the shaft is rotated.

I illustrate in Fig. 1 a complete lamp, a brief description of which will only be necessary to a full understanding of my invention.

A represents the fount, which maybe of any of the usual constructions; O, the central airtube, and which forms the inner wall of the wick-chamber; D, a conccntrictnbe surrounding the tube 0, but so as to leave a space between them, in the usual manner for this class of wicks.

slide E, as shown, and so that as the slide E is raised .or lowered the wick F and the sleeve G will be raised or lowered accordingly, the external diameter of the sleeve G corresponding to the internal diameter of the tube D, so that the movement of the wick-holding device may be free between the two tubes. space between the tubes 0 and D is therefore equal to the thickness of the slide E, the wick F, and the sleeve G. To introduce the wick, the slide and sleeve necessarily are raised to a point so far above the wick-chamber that the sleeve may be removed, and then the wick applied, the sleeve replaced, and then drawn down into place.

The

The wick-adjusting device consists ofa shaft,

H, arranged vertically in the fount with its axis parallel with the axis of the wick-tube, and the shaft is provided with a spiral rib, I, forming a screw-thread thereon. The shaft is supported at its lower end in a suitable bearing, J, and extends up through the fount, where it is provided with a suitable head, K, by which it may be readily rotated. Surrounding the shaft is a yoke, L, which works upon the spiral rib or screw-thread of the shaft, and is fixed to the wick-holder'E. The shaft is free for rotation, but is supported against vertical movement. By rotating the shaft in one direction the yoke L will rise, and with it the wick-holder and the wick it carries. Turnedin the opposite direction,the yoke will be forced downward, together with the wick-holder and the wick it carries.

Preferably the spiral rib is made of aquick pitch, so that slight extent of rotation will impart a considerable up or down movement to the wick.

To utilize the shaft as a filler, it is made tubular, as shown, opening into the fonnt at the bottom, and its upper end closed by the usual filler-cap, M, on the removal of which oil may be poured into the fount through the tubular shaft, in the usual manner of filling lampfounts.

I have represented in the illustration a central air-distribnter in the wick-tube; but while this is desirable in this class of burners, it is not essential to the invention.

I claim- 1. In a tubular-wick lamp, the combination of a wick-holder adapted to engage the wickof the lamp and vertically guided and a vertical shaft outside said wick-tube and in engagement with said wick-holder, whereby through said shaft said wick-holder may be raised or lowered for the adjustment of the wick, the said shaft made tubular and extending up through the fount, open outside the fount, and also open into the fount, substantially as described, and whereby said shaft serves not only as a means for adjusting the wick, but also as a tube for filling the fount.

2. In a lamp, the combination of a lampfount, a vertical tubular shaft supported against vertical movement, but free to revolve, I 5 the said tubular shaft extending through the top of the lamp-fount, open outside the fount, and also open into the fount, a wick-holder,

' and a yoke adapted to engage a spiral rib on 

